This story was originally published by Grist and is reproduced here as part of the Climate Desk collaboration. Shortly after he was reelected last month, Donald Trump announced an economic gambit that was aggressive even by his standards. He vowed that, on the first day of his second term, he would slap 25 percent tariffs on imports from Canada and Mexico, and boost those already placed on Chinese products by another 10 percent. The move set off a frenzy of pushback.